4. Optics: image projectors
  5. Lens support
  6. Lens position adjustable

Gunter Freiberg

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Microfilm reader

Optics: image projectors – Selective data retrieval – Plural picture rows on single microcard
Patent

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Microfilm reading device

Optics: image projectors – Lens support – Lens position adjustable
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Objective lens holding arrangement for a micro-film reader

Optics: image projectors – Plural projection paths with single light source
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Profile ID: LFUS-PAI-P-1348587

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